//============================================================================
//Gios Pdf.NET - A library for exporting Pdf Documents in C#
//Copyright (C) 2005  Paolo Gios - www.paologios.com
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//=============================================================================
using System;
using System.Text;

namespace lwzlz.Common.Gios.Pdf
{
    internal class PdfCatalog : PdfObject
    {
        public PdfCatalog(PdfDocument PdfDocument)
        {
            this.PdfDocument = PdfDocument;
            this.id = this.PdfDocument.GetNextId;
        }
        private string FirstKid
        {
            get
            {
                for (int x = 1; x < this.PdfDocument._nextid; x++)
                {
                    object o = this.PdfDocument.PdfObjects[x.ToString() + " 0 obj\n"];
                    if (o != null)
                        if (o.GetType() == typeof(PdfPage)) return ((PdfObject)o).HeadR;
                }
                return null;
            }
        }
        internal override int StreamWrite(System.IO.Stream stream)
        {
            string s = "";
            s += this.HeadObj;
            s += "<<\n";
            s += "/Type /Catalog\n";
            s += "/Pages " + this.PdfDocument.PdfRoot.HeadR + "\n";
            s += "/OpenAction[" + this.FirstKid + "/Fit]\n";
            s += ">>\n";
            s += "endobj\n";
            Byte[] b = ASCIIEncoding.ASCII.GetBytes(s);
            stream.Write(b, 0, b.Length);
            return b.Length;
        }

    }
}
